title: Correction of ledged canals with ultrasonic tips.
authors.affiliation: CT and Microendodontic Center, Japan. yterauchi@intellident.or.jp
authors.forename: Yoshitsugu
authors.initials: Y
authors.lastname: Terauchi
mesh_terms: D003762:Dental Instruments / Q000009:adverse effects*; D003786:Dental Pulp Cavity / Q000293:injuries*; D019232:Dental Restoration Failure; D006801:Humans; D019233:Retreatment; D018915:Root Canal Preparation / Q000009:adverse effects* / Q000295:instrumentation / Q000379:methods*; D018677:Tooth Injuries / Q000209:etiology; D014092:Tooth Root / Q000293:injuries*